JP2007269662A - Creamy skin-cleansing composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a creamy skin-cleansing composition that substantially does not include polyhydric alcohol, has a weak acidity of 4.0 to 6.0 pH, soft, smooth, white-enhanced outer tinting, excellent foaming, rinsing, good moist and fresh feeling after drying, further keeping softness even under a low temperature and can be easily prepared by using an ordinary stirrer. <P>SOLUTION: The problems of the creamy skin-cleansing composition can be settled by using an N-long chain acylglycine or its salt, a polyoxyethylene alkyl ether sulfate salt, betaine type amphoteric surface active agent, inorganic or organic salt and water in a specific mixing proportion and a specific pH. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, N-long-chain acylglycine and / or a salt thereof, polyoxyethylene alkyl ether sulfate, betaine-type amphoteric surfactant, inorganic and / or pyrrolidone carboxylate, and water are mixed in a specific mixing ratio and pH. And a creamy cleansing composition containing a fatty acid and / or an alkylpolyglucoside.

  N-long chain acylglycine and / or a salt thereof has been widely used in skin cleansers as a cleansing agent with low irritation, foaming and excellent rinsing properties. On the other hand, the creamy skin cleanser can be used in a timely and appropriate amount from the tube. It can be easily dissolved in water, avoids the melting of the soap and the stains around the washstand caused by the liquid detergent dripping. Cleanliness that can be done is preferred, and it has been used mainly for facial cleansing applications. Therefore, various studies have been made to make a creamy composition using N-long chain acylglycine and / or a salt thereof.

  Patent Document 1 proposes a method for obtaining a creamy dosage form excellent in foaming and rinsing properties by blending N-long chain acylglycine or a salt thereof, an inorganic salt, and a polyhydric alcohol. . However, in this composition, it was difficult to say that the polyhydric alcohol was easily separated, and the cream was not necessarily reproducible.

  Patent Document 2 discloses a cream-like composition having excellent form stability by using an N-long chain acyl neutral amino acid or a salt thereof, in particular, an N-long chain acylglycine salt, a polyhydric alcohol, and a highly polymerized polyol. A method of obtaining is disclosed. However, for these compositions, in order to obtain a soft cream, it is necessary to heat and dissolve all the components and then cool them down with sufficient stirring. There is a problem that air is entrained by the viscosity and a phenomenon that remains in the composition) and the appearance and smoothness of the cream is lowered. In addition, there is a problem that the cream is hardened during the low temperature storage and the odor by adding a large amount of polyhydric alcohol of 5% by weight or more.

  Patent Document 3 proposes a method using an N-long chain acylglycine alkali salt, a betaine amphoteric surfactant, water, and an organic acid in order to solve the problem that the cream becomes hard during low-temperature storage. Yes. Patent Document 4 discloses a method using an N-long chain acylamino acid salt, an imidazoline type benign surfactant, a water-swellable clay mineral, and a monoalkyl fatty acid glyceryl. However, in both documents, the deterioration of the appearance due to foaming at the time of manufacture is still not solved, and in the weakly acidic region at pH 6.0 or less, the abundance ratio of betaine amphoteric surfactant and imidazoline surfactant is increased. Due to this, new problems such as a decrease in foaming and a decrease in excessiveness could occur.

  Patent Document 5 proposes a method in which silicic acid anhydride and water-soluble polyalkylene glycol are used in combination with an N-long chain acylamino acid salt as another means for solving the aging stability of the cream. However, when an acylglycine salt is used as the N-long chain acylamino acid salt, there is a problem in that silicic acid precipitates and the cream tends to become non-uniform.

  Patent Document 6 proposes a method for providing a highly viscous composition by combining a long-chain acyl sarcosine salt, a polyoxyethylene alkyl ether sulfate, and a betaine amphoteric surfactant at a specific mixing ratio. . However, all of these compositions are intended for shampoos and are provided as liquid detergents with extremely high viscosity. Therefore, when trying to use it as a creamy detergent, there are problems of poor cutting when scooped up with a finger and poor familiarity when mixing with water with a palm.

Uses a weak acidity of pH 4.0 to 6.0 with virtually no polyhydric alcohol, soft, smooth and white appearance, foaming, rinsing, moist feeling of skin after drying, refreshing feeling There has been a strong demand for a creamy skin cleanser composition that is excellent in feel at the time, does not become hard at low temperatures, and is easy to prepare even if a normal stirrer is used.
Japanese Patent No. 3304646 JP 2000-143497 JP JP 2001-19632 JP JP 2002-265352 A JP 2002-363061 A US477424

  The object of the present invention is to have a weakly acidic, pH 4.0-6.0, soft, smooth and white appearance, substantially free of polyhydric alcohol, foaming, rinsing properties, skin after drying An object of the present invention is to provide a creamy skin cleanser composition that is excellent in touch during use, such as moist and refreshing, does not become hard at low temperatures, and can be easily prepared even by using a normal stirrer.

  As a result of intensive studies to solve the above problems, the present inventor has found that N-long chain acylglycine or a salt thereof, polyoxyethylene alkyl ether sulfate, betaine type amphoteric surfactant, inorganic and / or pyrrolidone. The inventors have found that the above problems can be solved by containing a carboxylate and water at a specific blending ratio and pH, and have completed the present invention.

That is, the present invention includes the following aspects.
N-long chain acylglycine and / or salt thereof (component A), polyoxyethylene alkyl ether sulfate (component B), betaine type amphoteric surfactant (component C), inorganic salt and / or pyrrolidone carboxylate (component) D), water (component E) is contained, and [the total weight of (component A) (component B) (component C)] is 12 to 30% by weight based on the total weight of the composition, and (component A) weight / [(Component A) (Component B) (Component C) total weight] is 3/8 to 4/5, and (Component B) weight / (Component C) weight] is 9/1 to 1/1. A creamy skin cleanser composition having a pH of 4.0 to 6.0.
In addition to the above components, the present invention further comprises 0.01 to 5.0% by weight of a higher fatty acid (component F) and / or an alkyl polyglucoside (component G).

  Substantially free of polyhydric alcohol, has a weak acidity of pH 4.0 to 6.0, has a soft, smooth and white appearance, foaming, rinsing, moist feeling after drying, refreshing feeling, etc. It became possible to obtain a creamy skin cleanser composition that was excellent in feel during use, did not become hard at low temperatures, and was easy to prepare even using a normal stirrer.

  The creamy skin cleanser composition of the present invention comprises N-long chain acylglycine and / or a salt thereof (component A), polyoxyethylene alkyl ether sulfate (component B), betaine type amphoteric surfactant (component C). , Inorganic salt and / or pyrrolidone carboxylate (component D) and water (component E) are blended at a specific ratio. “Cream” as used herein means “handy, creamy, smooth, shiny, hand cream-like appearance that can easily be scooped up with a fingertip after filling into a tube or jar. It is a shape that does not cause dropping or significant stringing. Hereinafter, the constituent components and the blending ratio will be sequentially described.

  The long-chain acyl group of the long-chain N-acylglycine and / or salt thereof used in the present invention (component A) is derived from a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms. Things can be used. In the case of an acyl group having less than 8 carbon atoms, foaming and dirt removal as a cleaning agent may be insufficient, and when the number of carbon atoms exceeds 22, the solubility in the cleaning composition is low, and the composition The smoothness of the image may be impaired. The fatty acids here include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, isostearic acid, palmitic acid, oleic acid, linoleic acid, behenic acid, coconut oil fatty acid, palm fatty acid, hardened beef tallow fatty acid, etc. Can be mentioned. You may use these 1 type or in mixture of 2 or more types. In particular, coconut oil fatty acid, lauric acid, and myristic acid are preferable from the viewpoint of foaming and good foam quality. Fatty acid can be produced by a known method such as a reaction with glycine and Schotten-Baumann reaction under alkaline aqueous solution conditions after conversion to fatty acid chloride by a conventional method.

  The salt of (Component A) used in the present invention is not particularly limited. Specifically, alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium, ammonium, diethanolamine, and triethanolamine And organic amino salts such as lysine and arginine. Alkali metal salts are preferred, and sodium or potassium is particularly preferred from the viewpoint of avoiding unexpected deterioration due to salt exchange with other ionic components.

［式中、Ｒは炭素数８〜２４のアルキル基；ｎはエチレンオキサイドの平均付加モル数で０．５≦ｎ≦８；Ｍは金属、有機アミン、塩基性アミノ酸である。］ The polyoxyethylene alkyl ether sulfate of (Component B) used in the present invention is not particularly limited, but lauryl ether sulfate is preferable and is represented by the following general formula (1) and satisfies the specific conditions. Ethylene alkyl ether sulfates are more preferable, and those in which n is 2 to 3 mol are particularly preferable.

[Wherein, R is an alkyl group having 8 to 24 carbon atoms; n is an average addition mole number of ethylene oxide, 0.5 ≦ n ≦ 8; M is a metal, an organic amine, or a basic amino acid. ]

  The salt (M) of (Component B) used in the present invention is not particularly limited, but alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium, and organic amines such as ammonium, diethanolamine and triethanolamine Basic amino acid salts such as salts, lysine and arginine can be used. You may use these 1 type or in mixture of 2 or more types. In view of foaming and good detergency, alkali metal salts are preferable, and sodium salts are particularly preferable.

（式中、Ｒ^１は炭素原子数５〜２１の直鎖または分岐鎖のアルキル又はアルケニル基を、Ｒ^２、Ｒ³は水素原子又は炭素原子数１〜３の直鎖又は分岐鎖のアルキル基を、ｎは１〜３の整数を、ｍは１〜４の整数を示す。） The (Component C) betaine-type amphoteric surfactant used in the present invention is not particularly limited, and specifically, an acetate betaine-type amphoteric surfactant, an amide betaine-type amphoteric surfactant, and a sulfobetaine-type amphoteric surfactant. Agents, phosphobetaine-type amphoteric surfactants, and imidazolinium betaine-type amphoteric surfactants can be used. Preferable examples of the betaine-type amphoteric surfactant include amide betaine-type amphoteric surfactants represented by the following general chemical formula (2). Preferable examples of the amide betaine-type amphoteric surfactant include amide propyl betaine laurate, amide oil fatty acid amide propyl betaine, and myristic acid amide propyl betaine. From the viewpoints of foaming and stability of the composition, coconut oil fatty acid amidopropyl betaine is particularly preferable.

Wherein R ¹ is a linear or branched alkyl or alkenyl group having 5 to 21 carbon atoms, R ² and R ³ are a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms. , N represents an integer of 1 to 3, and m represents an integer of 1 to 4.)

  The inorganic salt or pyrrolidone carboxylate of (Component D) used in the present invention is not particularly limited, but those usually produced by a neutralization reaction between an acid and a base can be used. Examples of the acid include inorganic acids such as sulfuric acid, hydrochloric acid, phosphoric acid and carbonic acid, acidic amino acids such as glutamic acid and pyrrolidone carboxylic acid, and organic acids such as citric acid and gluconic acid. Examples of the base include alkali metals such as sodium and potassium, alkaline earth metals such as magnesium and calcium, basic amino acids such as lysine, arginine and ornithine, and organic amines such as ammonia, triethanolamine and diethanolamine. As the basic amino acid or pyrrolidone carboxylic acid, either a racemic form or an optically active form may be used. Specifically, sodium chloride, potassium chloride, magnesium chloride, calcium chloride, sodium sulfate, sodium hydrogen sulfate, potassium sulfate, potassium hydrogen sulfate, magnesium sulfate, calcium sulfate, monosodium phosphate, disodium phosphate, monopotassium phosphate , Dipotassium phosphate, sodium carbonate, disodium bicarbonate, potassium carbonate, potassium bicarbonate, magnesium carbonate, calcium carbonate, sodium pyrrolidonecarboxylate, sodium L-pyrrolidonecarboxylate, potassium DL-pyrrolidonecarboxylate, DL-pyrrolidonecarboxylate Ammonium acid or the like can be used. These salts can be used alone or in combination. Sodium chloride, potassium chloride, sodium DL-pyrrolidonecarboxylate, sodium L-pyrrolidonecarboxylate, and DL-pyrrolidonecarboxyl are preferable from the viewpoint of obtaining a smooth, white and creamy cream. The acid sodium salt is more preferred.

  Water which is (Component E) used in the present invention is not particularly limited as long as it is of a purity that is generally used in detergents and cosmetics. Specifically, ion exchange water, well water, natural water, ground water, city water, hard water, soft water, and the like can be used. You may use these 1 type or in mixture of 2 or more types. Ion exchange water is preferred from the viewpoint of storage stability and hygiene of the product of the present invention.

  The pH of the creamy skin cleanser composition of the present invention is selected in the range of 4.0 to 6.0. If the pH is less than 4.0, the amount of unneutralized acylglycine increases, and foaming may decrease. If the pH exceeds 6.0, the solubility of the acylglycine salt in the composition increases, so that the creamy form May collapse. From the viewpoint that the cream form can be stably taken, it is preferably 4.5 to 6.0, more preferably 5.3 to 5.8. The acid for adjusting the pH is not particularly limited, and specific examples thereof include organic acids such as citric acid, lactic acid, acetic acid, malic acid, tartaric acid, glycolic acid; aspartic acid, glutamic acid, pyrrolidone carboxylic acid, etc. Acidic amino acids; inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, etc. Citric acid, tartaric acid, glutamic acid and phosphoric acid are preferred, citric acid and tartaric acid are more preferred, and citric acid is particularly preferred from the viewpoint of having pH buffering ability and being less susceptible to pH fluctuations due to other components.

  [The total weight of (Component A) (Component B) (Component C)] of the present invention is used in the range of 12 to 30% by weight based on the total weight of the composition. If it is less than 12% by weight, the cream is disproportionated, and if it exceeds 30% by weight, the composition becomes hard and the cream form cannot be maintained. From the viewpoint that the cream form can be stably maintained, 15 to 28% by weight is preferable, and 16 to 25% is more preferable.

  The (component A) weight / [(component A) (component B) (component C) total weight] of the present invention is used in the range of 3/8 to 4/5. If the ratio is less than 3/8, the acylglycine salt partially dissolves to form a non-uniform form. If the ratio exceeds 4/5, the composition tends to be hard, and in any case, the form of the cream is lowered. In particular, 2/5 to 3/4 is preferable, 5/12 to 5/7 is more preferable, and 5/12 to 2/3 is particularly preferable in that excellent foaming can be obtained.

  (Component B) weight / (Component C) weight] of the present invention is selected in the range of 1/1 to 9/1. If it is less than 1/1, it can be a cream with strong spinnability and poor handleability, and if it exceeds 9/1, the composition tends to be non-uniform. From the viewpoint of obtaining a particularly preferable form of cream, the range of 1/1 to 9/1 is preferable, the range of 2/1 to 8/1 is more preferable, and the range of 3/1 to 5/1 is particularly preferable.

  The (component D) weight / total composition weight of the present invention is used in the range of 0.1 to 5% by weight. If it is less than 0.1% by weight, the cream may lose its whiteness and become transparent when stored at a high temperature, and if it exceeds 5% by weight, the composition may be separated when stored at a high temperature. From the viewpoint of providing a stable whitening effect, the content is preferably 0.2 to 3% by weight, more preferably 0.3 to 2.5% by weight, and particularly preferably 0.5 to 2.0% by weight.

  In the creamy skin cleanser composition comprising the (component A) to (component E) of the present invention and having a specific blending ratio and pH, a fatty acid (component F) and an alkyl polyglucoside (component G) are further blended. Thus, each characteristic can be imparted. (Component F) and (Component G) may be used in combination.

  By adding a fatty acid (component F) to the creamy skin cleanser composition comprising the (component A) to (component E) of the present invention and having a specific blending ratio and pH, the whiteness of the cream is strong. Thus, the softness during low temperature storage can be further improved. As the fatty acid salt, a linear or branched saturated or unsaturated fatty acid having 8 to 22 carbon atoms can be used. Specific examples include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, isostearic acid, palmitic acid, oleic acid, linoleic acid, behenic acid, coconut oil fatty acid, palm fatty acid, and hardened tallow fatty acid. . You may use these 1 type or in mixture of 2 or more types. In particular, coconut oil fatty acid, lauric acid, and myristic acid are preferable from the viewpoint of foaming and good foam quality.

  Although there is no restriction | limiting in particular as a compounding quantity of (component F) of this invention, It is preferable to be used at 0.01-5 weight% with respect to the composition weight of (component A)-(component E). . If it is less than 0.01% by weight, the whitening effect of the cream may not be exhibited. If it exceeds 5% by weight, the viscosity and foaming of the cream may be reduced. From the viewpoint that the whiteness enhancement of the cream and the further improvement of the softness during low-temperature storage can be effectively exhibited, 0.1 to 3% by weight is preferable, and 0.2 to 2% by weight is preferable.

［式中、Ｒは炭素数８〜２４のアルキル基；ｎはグルコースの平均重合モル数で１≦ｎ≦３である。］
具体的には、カプリリルグルコシド、デシルグルコシド、ラウリルグルコシド、ミリスチルグルコシド、ウンデシルグルコシド、ヤシ油アルキルグルコシド、セテアリルグルコシド、イソステアリルグルコシド等が挙げられる。これらは１種類または２種以上を混合して使用しても構わない。特に、高温保存安定性の改善効果に優れるという観点から、ラウリルグルコシド、ヤシヤシ油アルキルグルコシドが好ましい。 The cream-like skin cleansing composition comprising (Component A) to (Component E) of the present invention and having a specific blending ratio and pH can be further preserved at high temperatures by adding an alkylpolyglucoside as (Component G). Stability can be further improved. Although there is no restriction | limiting in particular as alkyl polyglucoside, What is represented by following General chemical formula (3) is more preferable.

[Wherein, R is an alkyl group having 8 to 24 carbon atoms; n is an average polymerization mole number of glucose, and 1 ≦ n ≦ 3. ]
Specific examples include caprylyl glucoside, decyl glucoside, lauryl glucoside, myristyl glucoside, undecyl glucoside, coconut oil alkyl glucoside, cetearyl glucoside, and isostearyl glucoside. You may use these 1 type or in mixture of 2 or more types. In particular, lauryl glucoside and coconut oil alkyl glucoside are preferable from the viewpoint of excellent effect of improving high-temperature storage stability.

  Although there is no restriction | limiting in particular as a compounding quantity of (component G) of this invention, It is preferable to be used at 0.01-5 weight% with respect to the composition weight of (component A)-(component E). . If it is less than 0.01% by weight, the effect of improving high-temperature stability may not be sufficient, and if it exceeds 5% by weight, foaming of the cream may be reduced. From the viewpoint that the effect can be clearly exhibited, 0.1 to 3% by weight is preferable, and 0.2 to 2% by weight is preferable.

  In addition to the above components, various additives that are usually used in cosmetics can be added to the creamy detergent composition of the present invention within a range that does not impair the effects of the present invention. Additives can be appropriately selected by those skilled in the art according to the desired properties, and the type thereof is not particularly limited. For example, oily raw materials for cosmetics, silicone compounds, organic salts, hydrolyzed proteins, alcohols, Extracts, amino acids, vitamins, enzymes, anti-inflammatory agents, bactericides, antiseptics, antioxidants, UV absorbers, chelating agents, antiperspirants, pigments, pigments, oxidation dyes, pearlizing agents, wetting agents, moisturizing agents , Surfactants, inorganic powders, organic powders, water-soluble polymers, and the like.

  The creamy detergent composition of the present invention can be used as various detergents and cosmetics. Specifically, cosmetic soap, facial cleanser (cream / paste, liquid / gel, aerosol etc.), shampoo and other cleansing cosmetics, shaving cream (after shaving cream, shaving cream, etc.), toothpaste And oral cosmetics. From the viewpoint of excellent usability, facial cleansers, shaving creams and oral cosmetics are preferred.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited by these Examples.

[Evaluation methods]
Hereinafter, the sequential evaluation method will be described.
(Form)
The compositions were classified into the following categories by visual and finger touch at room temperature. In the determination, P in the category was ○, S or V was Δ, and L (liquid) or SP (separation) was ×.
P White, almost no fluidity, but flows easily when pressed with fingers. S White, presents a mass with no fluidity, and loses shape when pressed with fingers. V Transparent with a viscosity higher than the tube can be filled. Or cloudy liquid L (liquid) There is not enough viscosity to fill the tube, clear or cloudy liquid SP (separated) There are two or more phases that are separated into a liquid part and a solid part, or are clearly in different states

(Whiteness)
The whiteness of the composition was determined visually based on the following criteria.
◎ Overall whiteness is strong, no unevenness, and glossy ○ Overall whiteness is △ Whiteness is weak and there is a sense of sheerness, or there is slight coloring × No whiteness, transparency, color unevenness , Equivalent to one or more of strong coloring

(soft)
When you put the composition on the palm and stretch it out with the other finger,
4: Very soft 3: Soft 2: Normal 1: Not soft 0: Not soft Soft sensory evaluation by 5 panelists, ◎, 2.5-3. 0 was evaluated as ◯, 2.0 to 2.4 as Δ, and 1.9 or less as X.

(Softness (0 ℃))
When the composition is left in a storage at 0 ° C. for 7 days, and the composition immediately after removal from the storage is placed on the palm and stretched with the other finger,
4: Very soft 3: Soft 2: Normal 1: Not soft 0: Not soft Soft sensory evaluation by five panelists, ◎, 2.5-3. 0 was evaluated as ◯, 2.0 to 2.4 as Δ, and 1.9 or less as X.

(Smoothness)
When you put the composition on the palm and stretch it out with the other finger,
4: Very smooth 3: Smooth 2: Normal 1: Slightly lacking smoothness 0: Insufficient smoothness or non-uniformity or humps The sensory evaluation by five panelists was performed, and the average score was 3.1 or more In the case of ◎, 2.5 to 3.0 was evaluated as ◯, 2.0 to 2.4 as △, and 1.9 or less as ×.

(Kire)
When you put the composition on your palm and crawl part of it with your other finger,
4: Very clean 3: Excellent clean 2: Unsatisfactory 1: Unsatisfactory poor and unfavorable 0: Unsatisfactory clean and unfavorable The case of 3.1 or more was rated as ◎, 2.5 to 3.0 as ◯, 2.0 to 2.4 as Δ, 1.9 or less as x.

(Bubbles)
When 0.5 g of the composition is placed on the palm and a small amount of water is added and mixed with the other hand and foamed for 30 seconds, foaming is 4: very good 3: good 2: normal 1: slightly insufficient 0: insufficient Sensory evaluation was conducted by 5 panelists. When the average score was 3.1 or more, ◎, 2.5 to 3.0 were ◯, 2.0 to 2.4 were △, and 1.9 or less were ×. did.

(Rinse)
When 0.5 g of the composition is bubbled with both hands and rinsed under running water at 35 ° C. to 40 ° C., the rinsing is 4: very fast 3: fast 2: normal 1: slightly slow 0: slow Sensory evaluation was performed, and the case where the average score was 3.1 or more was rated as ◎, 2.5 to 3.0 as ◯, 2.0 to 2.4 as Δ, and 1.9 or less as ×.

(smell)
4: Nothing at all 3: Very little 2: Feeling a slight unpleasant odor 1: Feeling a clear unpleasant odor 0: Feeling a strong unpleasant odor A sensory evaluation was performed by five panelists, and the average score was 3.1 or more In the case of ３．０, 2.5 to 3.0 was evaluated as ◯, 2.0 to 2.4 as △, and 1.9 or less as ×.

(Familiarity with water)
When putting the composition on the palm, adding a small amount of water and mixing with the other hand, the time until the shape of the composition disappears 4: very fast 3: somewhat fast 2: normal 1: takes time, Slightly unfavorable 0: Very time-consuming, unfavorable, sensory evaluation by 5 panelists, ◎, 2.5-3.0 when the average score converted from the scoring table is 3.1 or more Was evaluated as ◯, 2.0 to 2.4 as Δ, and 1.9 or less as X.

(Bubble height)
150 g of the composition was placed in an emulsification tank of a vacuum emulsifier (manufactured by Tokushu Kika Kogyo Co., Ltd., TK ADD Homomixer 2M-03), and heated at a circulating water temperature of about 85 ° C. and a temperature of the composition of about 65 ° C. for complete dissolution.
Cooling was started by lowering the temperature of the circulating water at a speed of 10 ° C./10 minutes while stirring at a paddle (stirring blade) rotation speed of 20 rpm and a oyster rotation speed of 30 rpm. Stirring was stopped 30 minutes after the composition began to become cloudy, and the surface of the composition in the emulsification kettle was leveled. The height from the bottom of the kettle to the surface of the composition was measured with a ruler, and the height of the foam was measured.
Based on a height of 3.5 cm when 150 g of water is placed in the emulsification pot, the height of the composition is 3.4 cm or less, the height is from 3.5 cm to 5.2 cm, and the composition height is from 5.3 cm to 6. 9 cm was Δ, and a composition height of 7.0 cm or more was x.

(Hardness)
50 g of the composition dissolved in a glass bottle having an inner diameter of 3.5 cm and a height of 5.3 cm was put and placed in a room at 25 ° C. all day and night. When a stainless steel column having a diameter of 1.5 cm was allowed to enter at a speed of 6 cm / min with a rheometer (manufactured by Fudo Kogyo Co., Ltd., NRM-2010J-CW) for 30 seconds, the measured maximum force was regarded as hardness. Hardness less than 50 g was marked with ◎, 50 g to 100 g with ◯, 100-500 g with Δ, and 500 g or more with x.

(High temperature stability)
For high-temperature stability, these compositions were filled into a tube container having a diameter of 5 mm, left in a 45 ° C. storage for 7 days, and the composition immediately after removal from the storage was visually checked based on the following criteria. Determined.
◎ Even if the mouth of the tube is down, the composition does not flow down, and there is almost no fluidity on the palm. ○ Even if the mouth of the tube is down, the composition does not flow down, but it flows very slowly on the palm of the hand. Even if the mouth is down, the composition does not flow down, but it flows on the palm of the hand × When the tube mouth is down, the composition flows down

[Examples 1 to 27, Comparative Examples 1 to 54]
Cleaning compositions (Examples 1 to 27, Comparative Examples 1 to 54) having the compositions shown in Table 1 below were prepared and tested according to the following procedures. In addition, the quantity (numerical value in a table | surface) of each compounding component described in a table | surface is a weight fraction (%) when the whole composition is set to 100. In addition, citric acid monohydrate was used in an amount necessary for adjusting the pH of the composition.

〔procedure〕
1. The evaluation (form) of the primary evaluation to the form of the composition was evaluated.
2. Secondary evaluation to evaluation of the quality of the composition as a cream For compositions whose primary evaluation is ○ or △, (whiteness), (softness), (smoothness), (break), (softness) (0 ° C.)).
3. Tertiary evaluation In the secondary evaluation, x was removed from two or more compositions, and (foaming) and (rinsing properties) were evaluated.

表１からわかるように、実施例の洗浄剤組成物はクリーム状の形態を有し、しかもそのクリームは白みが強く、柔らかくなめらかできれがよく、低温でも硬くなることがなく、泡立ちおよびすすぎ性に優れるものである。

As can be seen from Table 1, the cleaning compositions of the examples have a creamy form, and the cream is strong in whiteness, can be soft and smooth, does not become hard even at low temperatures, foams and rinses It has excellent properties.

[Examples 28 to 29, Comparative Examples 55 to 64]
Cleaning compositions (Examples 28 and 29, Comparative Examples 55 to 64) having the compositions shown in Table 2 below were prepared and tested according to the following procedures. In addition, the quantity (numerical value in a table | surface) of each compounding component described in a table | surface is a weight fraction (%) when the whole composition is set to 100.

〔procedure〕
1. The evaluation (form) of the primary evaluation to the form of the composition was evaluated.
2. Secondary evaluation-Evaluation of the quality of the composition as a cream For compositions whose primary evaluation is ○ or △ (odor), (whiteness), (smoothness), (clear), (familiarity with water ) Was evaluated.
3. Third-order evaluation In the second-order evaluation, x was removed from two or more compositions, and (foaming) and (rinsing properties) were evaluated.
4). Fourth evaluation to ease of preparation and softness of the composition Only those with P evaluation in the primary evaluation were evaluated for (foam height), (hardness), and (softness (0 ° C.)).

表２からわかるように、Ａ成分に無水ケイ酸を配合する組成物では、無水ケイ酸が沈降することによる固液分離が生じてしまい（比較例６１、６２（引用文献５相当））、Ａ成分類似のアシルサルコシンにＢ成分、Ｃ成分、Ｄ成分、Ｅ成分を配合した組成物は、粘性が強すぎて、白み、きれ、水とのなじみのいずれもが不十分であった（比較例６３，６４（引用文献６相当））。また、Ａ成分にＤ成分（無機塩）を配合する組成物ではたとえ粘性組成物ができても、白み、水とのなじみは不十分であり（比較例５５、５６（引用文献１相当））、Ａ成分に多価アルコールを配合する組成物では泡がみが高い上、著しく硬くなってしまった（比較例５７（引用文献２相当）、比較例５８（引用文献３相当））。Ａ成分にＣ成分（ベタイン系両性界面活性剤）を配合する組成物では泡がみが高い上、なめらかさが不十分となった（比較例５９（引用文献３相当）、比較例６０（引用文献４相当））。このように、いずれの引用文献をトレースしてもクリーム状とするには程遠いものであり、一方、本発明の組成物は白みが強く、柔らかく、なめらかで、きれがよく、低温でも硬くなることがないクリーム状を呈し、製造時に泡がみしにくく、しかも泡立ちおよびすすぎ性に優れるものであることが分かった（実施例２８，２９）。

As can be seen from Table 2, in the composition in which silicic acid anhydride is blended with the component A, solid-liquid separation occurs due to the silicic acid sedimentation (Comparative Examples 61 and 62 (corresponding to Reference 5)). The composition in which B component, C component, D component, and E component were blended with component-similar acyl sarcosine was too viscous, and all of whiteness, cracking, and familiarity with water were insufficient (comparison) Examples 63 and 64 (corresponding to cited document 6)). Moreover, even if a viscous composition is made with a composition in which a D component (inorganic salt) is blended with an A component, whiteness and familiarity with water are insufficient (Comparative Examples 55 and 56 (corresponding to Reference 1)). ), A composition in which a polyhydric alcohol is blended with the component A has high foaming and is extremely hard (Comparative Example 57 (corresponding to Reference 2), Comparative Example 58 (corresponding to Reference 3)). In the composition in which the C component (betaine amphoteric surfactant) is blended with the A component, the foaminess is high and the smoothness is insufficient (Comparative Example 59 (corresponding to Reference 3), Comparative Example 60 (citation) Document 4 equivalent)). Thus, tracing any cited document is far from creamy, while the composition of the present invention is strong white, soft, smooth, crisp and hard at low temperatures. It was found that the product was in the form of a cream with no foaming, and it was difficult to foam during production, and the foaming and rinsing properties were excellent (Examples 28 and 29).

[Examples 30 to 32, Comparative Examples 65 to 76]
Cleaning compositions (Examples 30 to 32, Comparative Examples 65 to 76) having the compositions shown in Table 3 below were prepared and tested according to the following procedures. In addition, the quantity (numerical value in a table | surface) of each compounding component described in a table | surface is a weight fraction (%) when the whole composition is set to 100. In addition, citric acid monohydrate was used in an amount necessary for adjusting the pH of the composition.

〔procedure〕
1. Primary evaluation to evaluation of composition form (form) was evaluated.
2. Secondary evaluation-Evaluation of the quality of the composition as a cream For compositions whose primary evaluation is ○ or △, (whiteness), (softness), (smoothness), (clear), (water and Of familiarity).

表３からわかるように、実施例の洗浄剤組成物は白みが強く、水とのなじみがよいクリーム状を呈するものである。

As can be seen from Table 3, the detergent compositions of the examples have a strong whiteness and a creamy shape with good compatibility with water.

[Examples 33 to 35]
Cleaning compositions (Examples 33 to 36) having the compositions shown in Table 4 below were prepared, and (whiteness), (softness), (smoothness), and (high temperature stability) were evaluated. In addition, the quantity (numerical value in a table | surface) of each compounding component described in a table | surface is a weight fraction (%) when the whole composition is set to 100. In addition, citric acid monohydrate was used in an amount necessary for adjusting the pH of the composition.

表４からわかるように、実施例３３の洗浄剤組成物にさらに脂肪酸を組み合わせると、白みとなめらかさが増し（実施例３４）、アルキルポリグルコシドを加えることにより、高温安定性の驚くべき改良がなされ（実施例３５）、両者を組み合わせるクリームの柔らかさなめらかさなどに悪影響することなく高温安定性の驚くべき改良がなされることがわかった（実施例３６）。

As can be seen from Table 4, adding more fatty acids to the detergent composition of Example 33 increases whiteness and smoothness (Example 34), and surprising improvements in high temperature stability by adding alkylpolyglucosides. (Example 35), and it was found that the high temperature stability was surprisingly improved without adversely affecting the softness and smoothness of the cream combining both (Example 36).

  Substantially free of polyhydric alcohol, has a weak acidity of pH 4.0 to 6.0, has a soft, smooth and white appearance, foaming, rinsing, moist feeling after drying, refreshing feeling, etc. It has become possible to provide a creamy skin cleanser composition, various cleansers and cosmetics that are excellent in touch during use, do not become hard at low temperatures, and can be easily prepared even using a normal stirrer. Useful.

Claims (2)

N-long chain acylglycine and / or salt thereof (component A), polyoxyethylene alkyl ether sulfate (component B), betaine type amphoteric surfactant (component C), inorganic salt and / or pyrrolidone carboxylate (component) D), water (component E) is contained, and [the total weight of (component A) (component B) (component C)] is 12 to 30% by weight based on the total weight of the composition, and (component A) weight / [(Component A) (Component B) (Component C) total weight] is 3/8 to 4/5, and (Component B) weight / (Component C) weight] is 9/1 to 1/1. A creamy skin cleanser composition having a pH of 4.0 to 6.0. The creamy skin cleanser composition according to claim 1, further comprising 0.01 to 5.0% by weight of higher fatty acid (component F) and / or alkyl polyglucoside (component G).